diff --git a/libfwupdplugin/fu-udev-device.c b/libfwupdplugin/fu-udev-device.c
index 682422307..aba619e92 100644
--- a/libfwupdplugin/fu-udev-device.c
+++ b/libfwupdplugin/fu-udev-device.c
@@ -1016,6 +1016,7 @@ fu_udev_device_set_physical_id (FuUdevDevice *self, const gchar *subsystems, GEr
 	} else if (g_strcmp0 (subsystem, "usb") == 0 ||
 		   g_strcmp0 (subsystem, "mmc") == 0 ||
 		   g_strcmp0 (subsystem, "i2c") == 0 ||
+		   g_strcmp0 (subsystem, "platform") == 0 ||
 		   g_strcmp0 (subsystem, "scsi") == 0) {
 		tmp = g_udev_device_get_property (udev_device, "DEVPATH");
 		if (tmp == NULL) {